FIG. 6.

Inhibition of binding of labeled AdCMVLuc and Ad5lucRGD to 293 and HUVEC cells. 293 (A) or HUVEC (B) cells were preincubated with DMEM-Ad or DMEM-Ad containing either Ad5 fiber knob (100 μg/ml) or Ad2 penton base (100 μg/ml) or both for 1 h at 4°C. Fifty-microliter aliquots of ¹²⁵I-labeled viruses were then added to the samples. The rest of the procedure was as described in the legend for Fig. 5.